<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>事件处理</title>
</head>
<body>
     <button onclick="onclick_event()">这是一个点击事件按钮</button>
     <input type="text" onfocus="focus_event()" onblur="blur_event()">
     <script>
        //点击事件
        function onclick_event()    
        {
            alert("点击事件触发了");
        }
        //聚焦事件
        function focus_event(){
            console.log("获取焦点");
        }
        //失焦事件
        function blur_event(){
            console.log("失去焦点");
            
        }
     </script>
</body>
</html>